I've owned this car for 3 years and it's always had the same issue with the A/C. The air conditioning is very good and almost all the time it works perfectly. But, once in awhile the outlet air will become warm for 5-6 seconds. Never less, never more. After that the blower speeds up and air turns cold again. Once the car gets back to the set temperature the blower slows down and everything is back to normal. There are days when it happens several times and days when it doesn't happen at all.

Except for those little 5-6 second bursts of warn air the system work perfectly. I love to figure out what the deal is. Any ideas? Thanks.

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2000 Mercedes S500
1990 Mercedes 560SEL
1970 Triumph Spitfire